Switchblade knife



FIG. 1 is a blade-end view of the switchblade knife;

FIG. 2 is a glass break-end view of the switchblade knife;

FIG. 3 is a left side view of the switchblade knife;

FIG. 4 is a right side view of the switchblade knife;

FIG. 5 is a top view of the switchblade knife; and,

FIG. 6 is a bottom view of the switchblade knife.

The broken lines depict portions of the switchblade knife in which the design is embodied that are not considered part of the claimed design. 

CLAIM The ornamental design for a switchblade knife, as shown and described. 